The obstacles in our way have been endlessly discussed. With a focal date of 2050, this issue of AD asks when and how the design community can, should and must be taking action. Interviews: paola antonelli of moma and tim brown of IDEO.Contributors: janine benyus , roberta bondar, thomas fisher, francesca galeazzi, lisa gansky, dan hill, daniel kraft, karin lepasoon, tim maughan, alex mcdowell and franz ozwald and emily pilloton.Featured designers: futurecitieslab, mitchell joachim: terreform one, daewha kang, shop, urban-thinktank and liam young.